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Database Keys MCQs Quiz Online PDF Download eBook

Solve Database Keys Multiple Choice Questions (MCQ), database keys quiz answers PDF database practice test for online degree programs. Learn introduction to rdbms Multiple Choice Questions and Answers (MCQs), "Database Keys Quiz" questions and answers for CS major. Learn relational query languages, database schema, structure of relational model test prep for best online schools for computer science.

"A set of one or more attributes that collectively, allow us to identify uniquely a tuple in the relation, is known as" Multiple Choice Questions (MCQ) on database keys with choices unique key, special key, super key, and primary key for CS major. Practice database keys quiz questions for merit scholarship test and certificate programs for applied computer science.

MCQs on Database Keys PDF Download eBook

MCQ: A set of one or more attributes that collectively, allow us to identify uniquely a tuple in the relation, is known as

  1. Unique key
  2. Special key
  3. Super key
  4. Primary key

C

MCQ: No two tuples in a relation are allowed to have exactly the same value for

  1. Some attributes
  2. All attributes
  3. Some tuple
  4. All tuples

B

MCQ: Specifying tuples within a given relation, are expressed in terms of the

  1. Attributes
  2. Variables
  3. Function
  4. Domain

A

MCQ: A superkey may contain extraneous

  1. Attributes
  2. Keys
  3. Instances
  4. Entries

A

MCQ: The values of the attribute values of a tuple must be such that they can uniquely identify the

  1. Instance
  2. Entity
  3. Relation
  4. Tuple

D